21365800

素因数分解:

$2^3\times 5^2\times {\mathrm{317}}^1\times {\mathrm{337}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 49980060

約数和(自身を除く): 28614260

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 317, 337, 634, 674, 1268, 1348, 1585, 1685, 2536, 2696, 3170, 3370, 6340, 6740, 7925, 8425, 12680, 13480, 15850, 16850, 31700, 33700, 63400, 67400, 106829, 213658, 427316, 534145, 854632, 1068290, 2136580, 2670725, 4273160, 5341450, 10682900, 21365800]

約数ペア:

[(1, 21365800), (2, 10682900), (4, 5341450), (5, 4273160), (8, 2670725), (10, 2136580), (20, 1068290), (25, 854632), (40, 534145), (50, 427316), (100, 213658), (200, 106829), (317, 67400), (337, 63400), (634, 33700), (674, 31700), (1268, 16850), (1348, 15850), (1585, 13480), (1685, 12680), (2536, 8425), (2696, 7925), (3170, 6740), (3370, 6340)]